Record-resurfacinc machine



DEC- 1i, 1929. v. l.. FRYKMAN 1,740,425

RECORD RESURFACING MACHINE Filed Sept. 3, 1927 5 Shee'ZS-Sheei'l l $1 l(Wn l f mlommn/mmnw i, 1mm

Q w "m" @mui m iwi Q INVENTOR. VICTOR LFRYKMAN ORNEY Dec. l?, E929. v. 1FRYKMAN RECORD RESURFACING MACHINE Filed Sept. 5, 1927 5 Sheets-Sheet 2IN V EN TOR.

N mmm BY VICTOR LFB MAN ANEY Dec. 17, 1929.

v. L. FRYKMAN RECORD RESURFAGING MACHINE Filed Sept. 3, 1927 5Sheetsheet 5 INVENTOR. VICTORHYIM AN A RNEY Des. i7, 1929.

v. L.. FRYKMAN 1,740,425

RECRD RESURF'AGING MACHINE Filed sept. 5,. 1927 l5 Sheets-sheet 4 Fig.5.

IN VEN TOR.

VICTOR LFRYKMAN Y i g BY ORNEY Dec. 17, 1929. v. 1 FRYKMAN L'Z RECORDRESURFCING MACHINE Filed sept. 3, 1,927' 5 sheets-sheet. 5

INVENTOR,

VICTOR I FRYHMAN ATTORNEY Patented Dec. 17, 1929 .time M UNET@ Spiriti?VICTOR L. FRYKMAN, OF BRIJGEFORT, COlitllBCTCUT, ASSIGNOR TODIC'IAPIIONE CORPORATION', OF GONE HTCUT, A COR1?ORATION OF NEW YORKRECORLLEL S'JRFACITG MACHINE .Application filed September This inventionrelates to record-resuriacing machines, and more particularly to animproved machine for shaving record-blanks, particularly7 those intendediter use with dictation n'iachines.

ltecord-resmt'acing machines as previously proposed have comprised aframe, a rotatable record-supporting` mandrel mounted on the frame, amovable mandrel-end supporting means, a record-ejectinn' mechanism, anda tool-carriage adapted to he moved longitudinally ot the 'frame over arecord supported by the mandrel. This carriage, in the Jform shown,comprises means ior quickly setting' the record engaging; tool relativelo a record to he resuriiaced and automatically operated means foradvancing),l the tool step-hy-step toward the record ifor successivefinishing` cuts.

A feature ott the present invention is the provision of means forautomatically ejecting the recordv incidental to t-he movement et themandrel-end supportingn means to inoperative position, so that therecord will he ejected without attention on the part oi' the operatorwhen the mandrel supporting' means is moved preparatory to the removalof the record from the machine.

Another 'feature is the provision oi means for automatically andcoordinately releasing' the l:nite-bar locking means, restoringn theknife advancing means, and ejecting); the record from therecord-supporting;- mandrel incidental to the movement ot' themandrel-end supporting' means to inoperative position when' a record hasheen resuriaced and is to he removed 'from the machine.

A i'nrther feature is the provision oi means which automatically causesthe return ot the record-ejector to inoperative position alfter a recordhas been ejected andY while the inandrel-end suppoiting` means isinoperative to support the mandrel, so that the recordejector is not inposition to obstruct or prevent the final placing of another record onthe mandrel while the mandrel-end supporting` means isstill ininoperative position.

@ther features and advantages will hereinatter appear.

ln the accompanying` drawings which illustrate one form of the presentinvention, that at present preferredlfignre 1 is a top plan view ot' arecord? resurfacing machine made in accordance with the presentinvention.

Fig. 2 is a rear view, partly in section, of a recoitl-iesiiitacingmachine made in accordance with the present invention, showing1 themovable mandrel-vend supporting means in mandrel supporting` position,with the related record ejector, knife-bar lock releasing and ieedrestoringl means in normal or inoperative position.

Fig. 3 is a View similar to Fig. 2, but shows the end `gate ont ofmandrel supporting position with the record-ejector in operativeposition and the knife-har lock released and feed means restored, andshows the mechanism for accomplishing these various operations inposition to trip-oit and become temporarily disassociated from the meanswhich it operates.

Fig. si is a fragmentary view,l partly in section, ot the interconnectedknife-har and gage in set position relative to a record.

Fig. 5` is a bottom skeleton plan view of some oii the operating partsoi' the present invention.

Fig. 6 is a side sectional view showing the automatic step by step knifeadvancing means.

The record-resurfacing machine illustrated herein comprises a hase 12provided with a. lett-hand standard 13 and a righthand standard lil.Supported between these standards is a carriage guide rod 15 adapted toreceive a hearing sleeve 1601i' a knife-har carriage 17, The kniteeloarcarriage 17 extends torwardly and upwardly from the sleeve lo to a pointnear its forward end where it is provided with a hall-shaped weight andhand-piece 18 shaped tol he conveniently grasped and to act as almnd-piece by means ot which the carriage is moved', and from the latterit continues downwardly to a shoe portion 19 which normally contactswith and slides on a iront rail 20 forming part ot the traine.

Located in iront of the guide rod 15 and supported at one end on a pivotscrew 21 carried by the standard 14, is a mandrel shaft. 22 carrying adriving pulley 23 and a mandrel 24. At its end opposite the pulley 23,the mandrel shaft is supported for rotation by a pivot screw 25 carriedby an end gate 26 secured to a shaft or stud 27 which is rotatablymounted in the frame 12 at 28. The end gate 26 is held in mandrelsupporting position engaging the end of the front rail 2O by aselflocking manually releasable spring catch 29 engaging a cooperatingstud 30. The catch 29 is provided at its front end with a finger piece31 by means of which it is manipulated. wWhen the gate 26` is opened byswinging it from the position shown inFig. 2 to that shown in Fig. 3,the'mandrel shaft 22 rests on an auxiliary support 32 on the frame 12,and free movement of the mandrel and mandrel shaft to the left,as'viewed in Fig. 1, is prevented by a collar 33 carried by the mandrelf shaft and adapted to engage the support 32.

y The end-gate 26, in addition to supporting the free end of themandrel, also functions to prevent the record from being thrown off themandrel (which might cause serious damage) should the recordaccidentally become loosened from' the mandrel or should the operatorfail properly to place the record on the mandrel before starting themachine. In the broader aspects of the invention, therefore, the part 26should be understood to be a mandrel-end guard.

After a record 34, which is to be resurfaced, is placed on the mandrel24 as shown in Fig. 1,' the operator grasps a handle portion 35 on thegate 26 and swings the latter on its shaft 27 until a pin 36 on the endgate entersV an aperture 37 in the rail 20, While the pivot screw 25 inthe end gate enters a companion hole 38 in the end of the mandrel shaftandV raises the mandrel shaft to operating position. With this movement,the catch 29 engages the stud 30 and serves to hold the mandrel inoperating position. This means for locking the end gate as illustratedand described is claimed in the patent to Thomas Hei-lilly, No.1,726,894, patented September 3, 1929.

With the record mounted on the mandrel and the end gate locked inmandrel supporting position, the record is in position to be shavedwhich results from movement of a knife 39 mounted on the carriage 17longitudinally ofthe record 34 on the rod 15 and rail 2O under theinfluence of a rotating feed screw 40 mounted between the standards 13and 14 and engaged by a feed nut 41 mounted on the sleeve 16 of theknife-bar carriage. The feed-screw 40 is caused to operate coordinatelywith the mandrel shaft 22 by means of a connecting belt 42 engaging apulley 43 on the feed screw 40 and a pulley 44 carried by the mandrelshaft 22 along side of the pulley 23. The pulley 23 is usually driven byan electric motor (not shown) mounted below the frame 12.

Phonograph record-blanks are customarily cut or shaved to resurface themfor Vuse when it is desired to obliterate an old reccrd before making anew record on the surface of the blank. This operation may also beaccomplished by means, lof burnishing, melting or other arrangements,and so far as some or the salient features of the present invention areconcerned, it is immaterial whether the record-engaging tool used be aknife, a burnisher, or other device. However, since the method ofcutting is the one most frequently used and most preferable at present,means for that purpose is illustrated herein.l

Accordingly, the machine shown in the accompanying drawingscomprises aknife-bar 45 adapted to carry at its forward end the knife 39 usuallyformed of sapphire or other hard stone. This knife-bar is slid ablymount ed in a housing or knife-carrier 46 which is pivotally mounted onthe carriage 17 and is Vadapted to be moved so as to bring the knife 39into Contact with the record surface, so that simultaneous rotation ofthe record 34 and travel ofthe knife 39 with the knife-bar carriage 17while the knife is in engagement with the record causes the top surfacethereof to be removed. The knife is preferably provided with a chipchute47 into which the shavings from the record pass and through which theyfall downwardly through a trough 48 forming part of the frame 12 to asuitable container below the frame provided i for the purpose ofreceiving the chips.

In order that the knife 39 may be quickly Y and easily set to properoperatingr position for taking a first or preparatory cut whenresurfacing a record-blank, means are provided whereby a direct manualoperation, requiring no special attention on the part of the operator,causes the knife bar to be so set that it will extend into the recordmaterial only a predetermined and set amount, whereby the layer ofrecord material removedwill be of predetermined thickness. This means,comprises a gage-bar 49 mounted in the knife-bar carrier 46 for theknife-bar 45 and adapted Y to slide parallel therewith. The vknife-bar45 and gage-bar 49 are tied together by a yoke or tie-bar 50 formovement en bloc toward and from the record surface, so that, when theyare moved forwardly toward the record blank, the front face 51 of thegage will engage the record surface and limit the extent of forwardmovement of the knife 39 beyond the record surface.

The knife-bar 45, the gage-bar 49 and yoke 50 are so interconnected andformed that the working surface of the knife 39 usually X- tends beyondthe working surface 51 of the gage bar 49 by an amount equal to substanetially fifteen thousandths of an inch. This, with an additional advanceof five thou- ,1 change the depth of cut determined by the gage 49, andthis is accomplished by provid'- ing onf the gage a screw-threadedportion 52, adjustable in the threaded section 53 of the tie-barconnected to the knifeL bar 45.`

vtothe knife to suit average conditions, these parts are movedfromnormal inoperative position to position for taking a first orpreparatory cut on the record 34 by the operator 20; pressing his lingeragainst the finger piece 54n carried by the gage-bar until the flat end51 of the gage-bar comes in Contact with the record surface, at whichtime the edge of the knife will be located forwardly of the record aVpredetermined amount;

In order to hold the knife-bar 45 in any manually adjusted position,means are provided for locking the knife-bar in the knifebar. carrier 46so that it will be firmly held While shaving arecord. This means, in theform' shownI in the accompanying drawings, comprises a shaft mounted torotate in the carrier 4G adapted to extend transversely of the knife-bar45. The shaft 55 is provided with a cam section 5G adapted to engage aflat surface 57 on the bottom of the knife-bar 45 so that when' theshaft 55 is rocked by a spring 58 (Figs. 2, 8) the cam section 56 Willbe brought into-engagement with the fiat surface 57 on the knife-bar tofirmly lock the knifebar in place. ranged that should the knife-bar 45under cutting pressure tend to move backu'ardly it would cause the shaft55 to be rocked, thereby causing the cam 5t to move tightly and firmlyengage the knife-bar and prevent its further movement.

A manually operable release lever 59 which is fastened to the end of thecam shaft 55 is provided to actuate the shaft and release the knife bar45. A spring 58 anchored in the housing and to the release lever 59serves to normally hold the cam section` 56 of the shaft in contact Withthe flat surface 57 of the knifebar.

The gage-bar is arranged to follow the knife-bar 45 considering thedirection of travel ofthe carriage in shaving` a record. Consequently,the knife -bar and gage-bar are adapted to' be set to position to take afirst cut when the carriage is at the end of its travel (shown inFig. 1) after finishing a shaving` operation'. l

The first or preliminary cut is'seldom sufficient. to properly finish.therecord surface.`

The cam section 56 is so ar-v For' the purposeA ofy takingY additionalor" finishing cut-s of predetermined extent without manually resettingthe knife-bar 45 ini` theV housing, means are? providedV for auto'-matically advancingthe' knife 39 toward the record 34 a predeterminedextent incidental to the operation of moving the carriage toA startingposition of' travel. Accordingly,the knife-bar carrier 4G is pivot'allymounted on a shaft 60 carried in a pair of ears 61 andr62 formedintegral with the carriage 17 and between which earsthe endlv 63 of theknifebar carrier snugly fits. The shaft 60 is parallel tothe axis of themandrel 24 so'that when the knife-carrier 46 is rocked on the shaft1vthe knife 39 Will' be moved toward or fromr the record, according toWhether the knife-` bar carrier 4G is given a clockwise or counter-vclockwise movement, as seen in Fig; 6'.

Normally, the knife-bar carrier 46 is urged rearwardly, that ist'o say,away from the mandrel 24, by means of a spring 64 locatedin the carriageframe 17 which forcesa' plunger 65 upwardly against a forwardlyextending arm 66, part of the knife-bar carrier 46; lt is against thetension of'thespring64 that the knife-bar earrieris advancedstep-by-step toA move the knife' 39l closer tothe yrecord 34 forsuccessive'finishing cuts.

rlhis step-by-step movement of the knifeba'r' carrier 46- is controlledby a cam-disc (i7 mounted on'a stud GSlon the carriage 17, cooperatingwith a roller '69? mounted on a stud TO'carried by the arm 71 ofthecuttercarrier. The' spring 64- normally' urges the knife-bar carrier 46rearwardly so that the roller 69f contacts with the periphery ofthe camdisc'.

The'cam disc 671 is provided with aseriesof ratchet teeth 73' adapted tobe engaged by a feed pand-74 pivotally` mounted on a paivlcarrier 75which pivots on a stud 'r'carried by` the carriagev 1'?.4 The ratchetVteeth 73 are also engaged by a back-check pawl 77 pivotally mountedon'therstudl 761 and normally urged by the Weightl of1 its arm TS'intoengagement with Vthe ratchet teeth to prevent return movement ofthe camdisc 6'1" by' acftion of a spring 79; located in an undercutv portioninthe boss 80, see Fig. 6.

In order that thecam disc G7, and hencel the knife 39 may be movedstep-by-'step'f to accommodate for successive finishing cuts as` anincidentto the movement ofthe carriage to position to start shaving arecord, the carrer 75 for the feed pawl' 74 is arranged" to overlie aprojection 81 on the basel plate 12V Whenthe carriageV is, as shown inYFigs; 2 or 3, in the position at the end'v ofv a shaving operation. Theparts are so arranged that when the carriage 17 is raisedr by means ofthe hand-piece 18 from the positions shownini Figs.` 1 andv 6"pivotalllyV on the carriage rod 15, the' loW-erportion ofthepaWl-carrier 75v engages the projection 81 on, the frame;y

lill) and causes the pawl 75 to engage a ratchet tooth on the cam disc67 and move the latter an amount equal to the distance between two Yteeth, the pawl 75 at this time moving block-` wise, as seen in Figs. 2and 3, against the tension of a spring 82. l/Vhile the cam disc 67 u isbeing so moved, one of the ratchet teeth thereon passes theback-checkpawl 77 and the latter then prevents the return of the cam disc 67 tostarting position.

This upward swinging movement of the carriage 17 is necessary to allowmovement of the carriage to starting position, for by it the feed-nut 4lis removed from the feedscrew shaft 40, and the knife 39 and 49 aremoved away from the record. With the carriage so raised, it is movedlongitudinally of the machine toward the other or starting end of therecord and, upon reaching that end, it is allowed to descend when thefeed-nut 4l again engages the rotating feed screw 40 and causeslongitudinal travel of the carriage, and the knife again engages therecord 84 and shavcs the same as a first finishing cut. l

During the movement of the carriage to starting position, the feed-pawlcarrier 75 slides oft' the projection 8l and is returned to its normalposition by a spring 83 wrappedv around the stud 76 and having one endanchored in the pawl carrier 75 while the other end is anchored in thecarriage 17.

If the first finishing cutis not suflicient to provide a satisfactoryrecording surface on the record, additional finishing cuts may beobtained by again raising the carriage 17 and moving it to startingposition. Thus, without making any manual readjustments of the knife,the automatic advancing means, comprising the feed pawl 74 and cam disc67 above referred to, will ad- Vance the knife by moving theknife-carrier 46 arcuately toward the record during the raising of thecarriage.

After the record has been satisfactorily shaved, the knife 39 andknife-bar carrier 46 with the step-by-step advancing means, comprisingthe cam disc 67, are -returned to normal position so that the knife maylater be manually set to take a first or preparatory cut from a newrecord. To do this, the

lever 59 is operated to rotate the cam shaft 55 against the tension ofthe spring 58 to thus release the knife-bar 45. Vhen so released, theknife bar is restored to inoperative position by means of a spring 84located in thek knife-carrier 46. At the same time, the knife-advancinglcam disc 67 is released so as to permit its return by the spring 79 bycausing the back-check pawl 77 to beV disengaged from the ratchet teeth73.

`This is accomplished `without requiring attention on the part of theoperator by providing a connection,lbetween the weight arm 78 of theback-check pawl and an arm on the knife-bar lock lever 59, comprising alug on the weight arm vof the back-check pawl which is adapted to extendinto an aperture 86 on the knife-release lever.

Hence, when the knife-release lever 59 rotates with the shaft 55, thearm thereon will raise the arm 78 of the back-check pawl lever 77 andremove the pawl from engagement with the ratchet teeth. By thisoperation, the cam disc 67 is permitted to be returned to normal orinitial position by the spring 79, because the feed pawl 74 is normallyout of engagement with the ratchet teeth 7 3. When the cam disc 67 isreturned to normal or initial position, it allows the knife-bar carrier46 to be moved to its normal or initial position by means of the spring64 provided for thevpurpose. Movement of the cam disc 67 is limited inboth directions by a stop pin 87 engaging shoulders 88 and 89 on the camdisc.

As explained above, means have heretofore been provided for manuallyreleasing the knife-bar locking means for restoring the knife-advancingvmeans and for separately ejecting the record. According to the presentinvention, however, means are provided for automatically andcoordinately releasing the knife-locking means, restoring the knifeadvancing means, and ejecting the record incidental to the operation ofmoving the end gate 26 from the mandrel supporting position.

The present invention further provides means comprising an automatictrip-off arrangement to disassociate the record-ejector,knife-advancingmeans and knife-bar locking means from the end gate whenthe latter has completed its movement to non-supporting position withrespect of the mandrel.

Before continuing with the description of the above, attention is calledto the fact that much of the record-ejector shown in the accompanyingdrawings is similar to the usual record-ejectors for record-resurfacingmachines. This usual construction comprises a record-ejector plunger 90slidable longitudinally of the machine in the standard 91 and normallyheld in inoperative position by a spring 92. The plunger may be movedforwardly, until a head 93 thereon engages the record to loosen it fromthe mandrel 24, by movement of a lever 94 mounted on a rocker-shaft 95journalled in the standards 96 and 97. The rock-shaft 95 is usuallyprovided with a manually operable lever which serves to rotate therockshaftand thereby move the lever 94 and related plunger, 90 againstthe records edge to eject the same.

According to the present inventiomhowever, this manually operable meansmounted on the rock-shaft is dispensed with and instead the rockshaft isautomatically actu ated by means operatively related to therecord-supporting end gate 20. rlhis means comprises a cam 98 secured tothe stud 27 to which the gate 20 is also secured. This cam 98 cooperateswith a bell-crank 99 pivoted on a stud 100 and connected to a link 101by a stud 102. The link 101 is movable longitudinally of the machine ona stud 103 sliding in an aperture 101 therein and supports a lever 105,which is held thereon by a stud 106, and a spring 107, the purpose ofwhich is hereinafter explained.

In the i'irst part of the movement of the end gate away from the mandrelsupporting position (Fig. 2) ,the link 101 is automatically moved by thecam 98 in the direction oli' the arrow shown in Fig. 3, and therebycauses the lever 105 to enga-ge a lever 108 iiXed to the i'ocksliaft't95 and moves the rockshat't in a counter-cloclrwise direction, see F 3,causing the ejector leveil 94( and plunger 90 to move toward the recorduntil the record is released 'from the mandrel.

rlhis is a very advantageous result for, by it, the time and energyheretot'oie required Aior separately manually operating the recordejector is saved and no mental etlort requirerl lby the operatorrelative to the proper sequence of operation for conditioning themachine, since the record is automatically ejected incidental to theregular operation oi. opening the end gate 26.

llt should be especially note-:l that the present invention alsoprovides automatic trip-oft means for tiie return of the record-ejectorto inoperative position when the end-gate is completely opened, therebypermitting the mandrel to receive a ne f' record without interferencewith the plunger 90. To do this, the lever 105 is made in the form oiatriplever and has an ear 109 which engages a cam section 110 of thelever 108 when the link 10.1 has been moved longitudinally as viewed inFig. 3, a distance sui'hcient to complete the movement of the ejectorplunger. lllith further movement of the link 101, as the openingmovement oi the gate continues, the ear 109 in Contact with the camsection 110 causes a toe portion 111 ot the trip-lever 105 to move overa step 112 on the edge of the lever 108 until the toe 111 slips oli."the step 112 (as it about to do as shown in Fig. After this trip-ott',the plunger 90, the rock-shaft 95 and related parts are moved toinoperative position by the spring` 92, irresoective of further movementor lack oi' movement of the end With the iturther movement ot the endgate 2G to .i extreme open position, the link 101 is moved further tothe right as shown in Fig. "l and the ear 109 ot the trip lever 105travels over the cam sui-tace 110 of the lever 108 while this leveil ispositioned as shown in Fig. lilith the end gate 26 fully opened the`operator removes the shaved record tablet Vtrom the mandrel 241 andthen placesfanknife-advancing means, thereby allowingfthe saine to bereturned to `inoperative position incidental to the operation otmoving'the endgate out of mandrel supporting position .when the carriageis in predetermined position.

According to the present invention, .this

means comprises a bell crank 114i pivoted on the stud 103 and adapted tobe moved'clockwise by action of a roll 115-mounted on Ythe rock-shaftlever 108 contacting with an exe.v

tension 116 of the bell crank whichi'orces the bell crank in a clockwisedirection, thereby causing an extension 117 of the bell crank to contactwith and vertically raise a spring pressed plunger 118 whichis mountedto slidek n `in the frame.

Further movement of the bell crank 114 with the extension 117 `incontact with the plunger 118 forces the same upwardly until it contacts`with thestop pawl eXtension119,-.

moving the latterr clockwise. rlhis clockwise movement ot the stop pawlthrough itsconnection with the knife-bar release lever 59 inthe aperture86 moves the lever 5.9 and shaft 55 until the knife-bar 415 is releasedwhen it will be returned to inoperative position by the spring 89, andalso moves the stop pawl 77 out of engagementwith the teeth 7 3 of thecam disc 67, thereby permitting the knife'bar carrier i6 and theknife-advancing' means to be returned. to normal inoperative position byaction oi"- the springs 64 and 79 respectively.

lt will be noted that the trip-oil arrangement Jor the record-ejectorVabove described also serves to return the release plunger 118 to normalposition. rlhis is accomplished after the trip-off occurs when the lever108 carrying the roll 115 moves in a clockwise 'di- Vi'ection, therebypermitting` the bell crank'llt and plunger 118 to return to normalposition by action ot the spring 120.

Thus, it will be seen that the present invention provides means foraccomplishing the advantageous results of coordinately and automaticallyreleasing the knife-locking means, restoring the knife-advancing means,and ej ecting the record incidental to the usual and regular operationof opening the mandrel-supporting end-gate, and provides such means withan automatic trip-olf for return- .los

ing the record-ejecting mechanism and the "knife-bar lock and advancingmechanism retions of the improvements may be used Without others.

iI-Iaving thus described the invention, what is claimed as new and forWhich it is desired to obtain Letters-Patent, is

1. In a record-resurfacing machine, the combination of a mandrel forsupporting a record to be resurfaced; an end-gate; and means operativelyrelated to the endgate for automatically ejecting a record from saidmandrel in response to movement of the end gate.

2. In a record-resurfacing machine, the combination of a mandrel forsupporting` a record to be resurfaced; an end-gate; a record engagingtool; means for locking the record engaging tool in desired relationshipwith the record; and means for automatically and coordinately releasingthe tool locking means and ejecting the record incidental to theoperation of moving the end-gate out of operative position.

3. In a record-resurfacing machine, the combination of a mandrel forsupporting a record to be resurfaced; an end-gate; a record engagingtool; automatic means for advancing the record-engaging tool toward therecord for successive cuts; and means for automatically and coordinatelyrestoring the tool advancing means and eject-ing the record incidentalto the operation of moving the end-gate out of operative position.

4:. In a record-resurfacing machine, the combination of a mandrel forsupporting a record to be resurfaced; an end-gate; a record engagingtool; means for locking the record engaging tool in desired relationshipWith the record; automatic means for advancing the record engaging tooltovvard the record for successive cuts; and means for automatically andcoordinately releasing the tool locking means, restoring the automatictool advancing means, and ejecting the record incidental to theoperation of moving the endgate out of operative position.

5. In a record-resurfacing machine, the combination of a mandrel forsupporting a record to be resurfaced; a carriage; a record engagingtool; an end-gate; means for locking the record engaging tool relativeto the record; means for automatically advancing the record-engagingtool a predetermined eX- tent toward the record for successive cuts; arecord-ejector; and means operable only When the carriage is inpredetermined position for automatically and coordinately releasing thetool locking means, restoring the tool advancing means, and ej ec'tingthe record incidental tothe operation of moving the endgate out ofoperative position.

6. In a record-resurfacing machine, the combination of arecord-supporting mandrel; an ejector for the record; and means foroperating the ejector comprising mechanism adapted to permit return ofthe ejector to normal inoperative position after said ejector has beenmoved by said operating means a predetermined extent in operatingdirection and before the said operating means has been released.

7. In a record-resurfacing machine, the combination of a recordsupporting mandrel; an end-gate; a record engaging tool; means forlocking the tool relative to therecord; an ejector for the record; andmeans for automatically and coordinately releasing the tool lockingmeans and operating the record ejector incidental to the movement of theendgate out of operative position, said means being adapted to permitreturn of the tool locking means and record ejector to normal orinoperative position after said end-gate is moved a predeterminedextent.

8. In a record-resurfacing machine, the combination of a mandrel forsupporting a recordto be resurfaced; an end-gate; a record-engagingtool; tool advancing means; an ejector for the'record; and means forautomatically and coordinately restoring the tooladvancing means andoperating the recordejector incidental to the movement of the endgateout of operative position, said means being adapted to permit return ofthe tooladvancing means and record ejector to starting position aftersaid yend-gate has been moved a predetermined extent.

9. In a record-resurfacing machine, the combination of a mandrel forsupporting a record to be resurfaced; an end-gate; a record-engagingtool; means for locking the tool relative tothe record; means foradvancing the record engaging tool toward the record for successivecuts; an ejector for the record; and means for automatically andcoordinately releasing the tool locking means, restoring the tooladvancing means and ejecting the record incidental to the movement ofthe end-gate out of operative position, said means being adapted topermit return of the tool locking means, the tool advancing means, andthe record-ejector to normal position after said end-gate is moved apredetermined extent.

10. In combination, a record-support; means for releasing a record fromsaid support; an operating device for said means; and a trip-olfconnection between said oper4 ating device and said means fordisconnecting said means from said operating device upon tbe completionof tlie operation of said means.

11. In combination, a. record-support; means for releasing a record fromsaid support; an operating device for said means; a trip-o connectionbetween said operating device and said means for disconnecting saidmeans from said operating device upon-tlie completion of the operationof said means; and means for returning said means to inoperativeposition when disconnected from said operating device.

12. In combination, a recordsupport; a record -ejector; recordejectoroperating means; and means to permit return of tbe record-ejector beforethe return of the operating means therefor. W

13. In combination, a frame; a recordsupporting mandrel; a.record-ejector; a lever on said frame; means to operate therecordejector when said lever is moved; and means to permit return ofthe ejector before the re turn of the lever.

14. In combination, al record-supporting mandrel; a record-ejector; anend-gate; and means operated by tlie said end-gate to operate therecord-ejector.

15. In combination, a record-supporting mandrel; a record-ejector; anend-gate; means for operating the record-ejector incidental to tliemovement of the end-gate; and means to permit return of therecord-ejector before the return of the end-gate.

1G. In combination, a frame; a lever on said frame; a record-supportingmandrel; a record-engaging tool; tool-locking means; a reeordejector;means for operating the record-ejector and releasing the tool-lockingmeans incidental to the movement of the lever; and means to permitreturn of the tool-locking means and the record-ejector to normalposition before tbe return of the lever.

17. In combination, a frame; a lever on said frame; a record-supportingmandrel; a record-engaging tool; toollocking means; tool-advancingmeans; a record-ejector; means for operating the recordejector,releasing the tool-locking means and restoring the tool-advancing meansincidental to the movement of said lever; and means to permit return ofthe record-ejector, the toollocking means and the tool-advancing meansto normal position before the return of said lever.

18. In combination, a frame; a` lever on said frame; a record-supportingmandrel; a record-engaging tool; means for advancing the tool toward therecord for successive fin` isliing cuts; a record-ejector; means foroperating the record-ejector; release means for restoring thetool-advancing means incidental to the movement of said lever; and meansto permit return of the record-ejector and said release means before thereturn of the lever.

19. In combination, a record-supporting mandrel; a record-engaging tool;means to lock said tool; tool-advancing means; a record-ejector; alever; means for operating the record-ejector and/or release means torestore the tool-advancing means and/or release the tooladvancing means,incidental to the movement of said lever; and/or means to permit returnof the record-ejector and/or said release means and/or the tool-lockingmeans to normal position Without returning said lever.

Signed at Bridgeport; in the county of Fairfield, and State ofConnecticut, this 11th day of August, 1927.

VICTOR L. FRYKMAN.

